Study Guide ch.10

Question 1

An entire skeletal muscle is covered by a coarse sheath called:

a) endomysium
b) perimysium
c) epimysium
d) aponeurosis

Answer 1

epimysium

Question 2

Muscles that are arranged like the feathers in a pulme are described as:

a) parallel
b) convergent
c) sphincter
d) pennate

Answer 2

pennate

Question 3

An aponeurosis is:

a) broad and flat
b) tube-shaped
c) featherlike
d) none of the above

Answer 3

broad and flat

Question 4

Antagonists are muscles that:

a) oppose prime movers
b) facilitate prime movers
c) stabilize muscles
d) directly perform movements

Answer 4

oppose prime movers

Question 5

A fixed point about which a rod move is called a:

a) lever
b) bone
c) belly
d) fulcrum

Answer 5

fulcrum

Question 6

In first-class levers, the:

a) fulcrum is between the pull and the load
b) load is between the fulcrum and the force
c) force is between the fulcrum and the load
d) load and force are equal

Answer 6

fulcrum is between the pull and the load

Question 7

True or False

The origin of a muscle is the point of attachment that moves when the muscle contracts

Answer 7

False

Question 8

True or False

Skeletal muscles usually act in groups rather than individually

Answer 8

True

Question 9

True or False

Prime mover and agonist are synonymous

Answer 9

True

Question 10

The optimum angle of pull of a muscle is generally parallel to the long axis of the bone

Answer 10

`Flase

Question 11

True or False
Tipping the head back, as in looking up at the sky, is an example of a first-class lever

Answer 11

True

Question 12

Wrinkling the forehead vertically

Answer 12

Corrugator supercilii

Question 13

Grating the teeth during mastication

Answer 13

Pterygoids

Question 14

Smiling

Answer 14

Buccinator

Question 15

Raising the eyebrows

Answer 15

Epicranius

Question 16

Flexing the head

Answer 16

Strenocleidomastoid

Question 17

Closing the eyes

Answer 17

Orbicularis oculi

Question 18

True or False

The external oblique compresses the abdomen

Answer 18

True

Question 19

True or False

The rectus abdominis flexes the trunk

Answer 19

True

Question 20

True or False

The levator ani closes the anal canal

Answer 20

False

Question 21

True or False

The external intercostals function to elevate the ribs

Answer 21

True

Question 22

True or False

The coccygeus muscles and levator ani form most of the pelvic floor

Answer 22

True

Question 23

All of the following are rotatir cuff muscles except:

a) deltoid
b) infraspinatus
c) supraspinatus
d) teres minor

Answer 23

deltoid

Question 24

The muscle that shrugs the shoulders is the:

a) sternocleidomastoid
b) deltoid
c) trapezius
d) pectoralis minor

Answer 24

Trapezius

Question 25

The posterior arm muscle that extends the forearm is the: a) triceps brachii b) triceps surae c) brachialis d) biceps brachii

Answer 25

triceps brachii

Question 26

The olecranon process of the ulna is a site of insertion for the: a) biceps brachii b) brachialis c) brachioradialis d) triceps brachii

Answer 26

Triceps brachii

Question 27

True or False | Intronsic muscles of the hand originate on the forearm and insert on the metacarpals

Answer 27

False

Question 28

True or False | Carpal tunnel syndrome affects the median nerve

Answer 28

True

Question 29

True or False | The deltoid is a good example of a multifunctional muscle

Answer 29

True

Question 30

True or False | The pectorialis major flexes the upper arm

Answer 30

True

Question 31

True or False | The biceps brachii is an extensor muscle

Answer 31

False

Question 32

The muscles of quadriceps femoris include all of the following except: a) vastus intermedius b) vastus medialis c) vastus lateralis d) vastus femoris

Answer 32

vastus femoris

Question 33

The anterior superior iliac spine is the site of origin for the: a) sartorius b) rectus femoris c) gracilis d) iliacus

Answer 33

sartorius

Question 34

A common site for intramuscular injections is the: a) gluteus maximus b) gluteus minimus c) gluteus medius d) tensor fasciae latae

Answer 34

Gluteus minimus

Question 35

Plantar flexion of the foot is achieved by the: a) tibialis anterior b) tibialis posterior c) peroneus brevis d) soleus

Answer 35

soleus

Question 36

The muscles of the hamstrings include all of the following except the: a) iliopsoas b) semitendonosus c) semimembranosus d) biceps femoris

Answer 36

iliopsoas

Question 37

True or False | The achilles tendon is common to both the gastocnemius and soleus

Answer 37

True

Question 38

True or False | The iliopsoas is composed solely of the psoas major and the iliacus

Answer 38

False

Question 39

True or False | The vastus intermedius originates on the posterior surface of the femur

Answer 39

False